Designer's Manual

Understanding Surge Protective Devices (SPDs) Surge Protective Devices (SPDs) are essential electrical protection tools designed to safeguard installations, equipment, and electronic components from sudden voltage spikes. These phenomena—caused by events such as lightning strikes, grid switching, load imbalances, or ground faults—can result in irreversible damage, reduced lifespan of...

Preventive maintenance is crucial to ensure the safety and reliability of electrical installations. It is a proactive approach involving regular and scheduled interventions to identify and resolve potential issues before they cause significant failures. This type of maintenance offers numerous benefits, including reduced downtime, increased operational safety, and significant reductions in costs...

Surge arresters (SPD) are essential devices for protecting electrical systems from transient overvoltages. These surges can be caused by atmospheric phenomena such as lightning or by switching operations on the electrical grid. ZOTUP, with years of experience and innovation in the sector, offers a complete range of surge protection solutions, designed to guarantee safety, reliability and high...

The increasing use of electrical or electronic equipment has generated greater interest in atmospheric overvoltages and overvoltages due to electrical maneuvers. The awareness that overvoltages and overcurrents pose a risk factor for various electrical installations has increased interest among several scholars. In this regard, jurists have committed themselves and drafted national and...

The protection of your photovoltaic system is put to the test by the destructive power of some natural phenomena. Among the most lightning is common and dangerous. In this article we will delve deeper into the topic: explainedwhat lightning is and what solutions to adopt to prevent its damage to photovoltaic systems. Lightning: what is it Lightning are electrical discharges...

Choosing the right arrester is as fundamental as it is challenging. ZOTUP, a leader in the production of SPD, constantly supports wholesalers and installers. ZOTUP Srl, leader in production of surge arresters, reaches the fourth year since the market launch of its new range of surge arresters, based on technology developed in four and a half years of research and development and supported by...

The new line of ZOTUP surge protection devices offers cutting-edge solutions for overvoltage protection with high performance, simplicity, and reduced installation costs. Focused on the needs of the electrical sector, ZOTUP presents a range of devices that eliminates the need for fuses, ensuring quick and compact installations without compromising reliability and quality. Watch the Video Protect...

Traduttore / Traduttore / 75% 10 B3 WHEN OVERCURRENT LIMITATION IS OR IS NOT NECESSARY If the short circuit current at the ZOTUP installation point is superior to its interrupting power, it is it is necessary to provide a support/backup fuse in series with the arrester. The interaction between the overcurrent limiting measures present in the system and the SPD must be evaluated during the design...

The insertion of SPDs in the system can be nullified, in whole or in part, by incorrect wiring. The IEC 60364-5-534 standard provides important indications regarding connections, aimed at reducing the dynamic voltage drops that occur on the cables to a minimum.< br />To understand the importance of this aspect, we must remember that the impulsive lightning current has a growth dynamic...

Lightning is an electrical discharge that occurs between two bodies with a very different electrical potential. It can originate between clouds, or more commonly between a cloud and the ground. In Italy, the period with the highest probability of lightning is the summer season, considering the power of thunderstorms. This atmospheric phenomenon should not be underestimated: at the lightning strike...

Installation of SPDs in TN-, TT-, and IT-Systems according to HD 60364-5-534 The installation of SPDs in a specific power distribution system must be coordinated with the protective measures against indirect contact (fault protection) and with the corresponding protective devices and their capability to withstand impulse currents.This coordination depends on the type and earthing arrangement of...

Lightning Protection Levels (LPLs) and SPDs discharge capability The Standard series EN 62305 classifies a set of four Lightning Protection Levels with decreasing efficiency. The table below briefly outlines the details and threat parameters for these levels. Discharge capability requirements according to EN 62305 In order to choose the correct value for the SPD discharge...

Pioneering Entrepreneurs: Optimize Your Production with Surge Protectors In the current industrial ecosystem, characterized by intensive use of cutting-edge technologies and avant-garde machinery, safety and energy efficiency emerge as crucial elements for market triumph. Future-oriented entrepreneurs recognize the installation of surge protectors as an indispensable strategic move for...

Selection of SPDs according to the lightning protection zone (LPZ) concept SPDs shall be selected and installed in accordance with the requirements of the HD 60364-4-443 and the IEC and EN 62305 series of standards respectively, and the HD 60364-5-534. The primary SPDs shall be located as close as possible to the origin of the installation. In many cases this will be the Main Distribution...

THEY CAUSE LARGE DAMAGE from "Tutto Normel" n.4 April 2016 - M. Mazzaro, A. Foggetto In the last ten years, especially in the last five, following generous incentives, over 650,000 photovoltaic systems have been installed in our country for a total power of around 20 GW. About half of this overall power is due to systems placed on buildings. To limit the risk relating to fires in...

Selection of SPDs according to the expected impact The standard series IEC and EN 62305 defines lightning flashes to various points as so called sources of damage. Such damage may e.g. be to a structures, to services, to installations or equipment. The installation of SPDs within the electric distribution system can significantly reduce the risk of such damages to services, to installations or...

We offer a wide range of surge protective devices with different circuit design and construction to cover the different application needs. The overview below provides a comparison of fundamental characteristics for the priciple selection related to the operating conditions and protection needs. L - ZOTUPLIMITERVaristor based SPDs: NFC No Follow Current® very short response time...

Understanding Surge Protectors: Differences Between Upstream and Downstream Protection with ZOTUP Technology In the realm of electrical safety, surge protectors play a crucial role in safeguarding equipment and systems from the damages caused by voltage spikes. ZOTUP, a leader in the industry with its Made in Italy products, offers cutting-edge solutions distinguished by innovation, reliability,...

ZOTUP SPDs WITH PROGRESSIVE PERFORMANCE INDICATOR SPD efficiency state is now simplified. A progressive indicator from green, to orange and then red, allows you to check in a simple and immediate way the level of protection that the SPD is still able to offer to the system. The assurance of being able to control progressively the level of efficiency of the SPD and then to program its replacement,...

Although low voltage is less dangerous than high voltage, when dealing with overvoltages you must always take the right precautions. The so-called surge protection devices or SPDs (surge protection devices) come to our aid in this field. Zotup'slow voltage surge arrestersare a high qualityMade in Italyproduction. and are able to effectively protect systems and people. What is it? a low voltage...

To absorb over-voltages and thus avoid short circuits, most of the time electrical systems require surge arresters. ZOTUP, an Italian company based in Bergamo, works for the development of Made in Italy surge arresters. What is a surge arrester? Over-voltage arresters are protection solutions for the entire electrical systems against over-voltages, surges and electricity peaks from the operator...

SPD Classification: Standards and Test Types Surge Protection Devices (SPD) are classified and tested based on parameters provided by the manufacturer. According to HD 60364-5-534 and EN 62305 standards, there are three test classes corresponding to three types of SPDs, designed for specific electrical protection applications. SPD Test Classes Class I SPD Tested with an impulse current Iimp...

Knowledge of some basic technical terms and definitions associated with SPDs will facilitate an understanding of the contents of this catalogue. Please find below a selection of the most important. TT SystemTechnique for the protection of persons: the exposed conductive parts are earthed and residual current devices (RCDs) are used. TN SystemTechnique for the protection of persons:...

In order to protect asignal lineordata, be it a TV antenna, telephone line , internet, CCTV, Profibus, or CANbus, is it is advisable to install an SPD placed in series with the line itself. Its sizing occurs according to: ·    of thenominal voltage Unof the line,      of the load absorption (rated absorption current IL), of theworking frequencyof the signal....

Awareness, that transient surges are the main influencing factor of the MTBF (Mean Time Between Failures) of systems and equipment, is driving all manufacturers in the area of surge protection to continuously develop new overvoltage protective devices with increasing features and in compliance with the actual national and International standards. The following is a list of the key standards...

NASA has satellites orbiting the Earth with sensors designed to detect lightning and collect data, which is transmitted to Earth, plotted geographically and used to construct a geographic record of lightning activity over time. The map above shows the average yearly counts of lightning per square kilometer based on data collected by NASA's Lightning Imaging Sensor on the Tropical Rainfall...

Required by HD 60364-4-443 and by the EN 62305 series of standards for protection against transient overvoltages of atmospheric origin. In the Internet era and with the exponentially increasing use of electrical and electronic equipment containing sensitive integrated circuits and semi-conductors with high cost implication in case of damage, increasing attention to transient phenomena...

With over 50,000 lightning strikes recorded throughout Italy in recent months, it is It is clear that electrical storms are reaching unprecedented levels. Recently, the activity of lightning is It has been extraordinarily intense, exceeding seasonal forecasts and putting a strain on the safety of structures across the country: according to the latest weather statistics, 2023 is recording one of...

In the world of surge protectors, one of the significant challenges is managing the length of connections. It's essential to ensure that the sum of the cable lengths does not exceed 50 cm, from the phase derivation to the surge protector terminals to the equipotential grounding connection. 1. Maximizing Protection Effectiveness Every meter of cable adds a voltage drop of 1000 volts in high...

Protecting industrial facilities is a top priority to ensure operational continuity and safety. Discover the advantages of using ZOTUP surge protectors in industrial environments: 1. Reliability in Harsh Environments Industrial environments can be subjected to extreme conditions such as high temperatures, humidity, and dust. ZOTUP SPDs are designed to ensure reliable performance even in...

Nowadays, electrical circuits and systems are the core of our daily comfort at home, from photovoltaic panels to telecommunications systems, such as radio and television.With its excellence and its over 30 years’ experience, ZOTUP is able to efficiently protect them from over-voltages.   What are over-voltages? For those who do not have a deep knowledge of the field, this...

Why? Every Home Deserves the Best Protection: The Importance of Surge Arresters  We live in an era where our daily lives and home well-being are intrinsically linked to technology. From security systems to entertainment devices, every aspect of our modern home depends on electricity. However, with the growing dependence on technology, so does the vulnerability of of our devices to potential...